ASTM_B_743_-_12.pdf

Designation:B74312Standard Specification forSeamless Copper Tube in Coils1This standard is issued under the fixed designation B743;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification establishes the requirements for seam-less copper tube in coils,suitable for use in refrigeration and airconditioning or other uses,such as oil lines and gasoline lines.1.2 UnitsThe values stated in inch-pound units are to beregarded as standard.The values given in parentheses aremathematical conversions to SI units that are provided forinformation only and are not considered standard.1.3 The tube shall be produced of the following coppers.Unless otherwise specified,tubes made from any one of thesecoppers may be supplied:Copper AlloyUNS No.Previously UsedDesignationType of CopperC10200OFOxygen-free without residual deoxidantsAC10300.Oxygen-free,extra low phosphorusAC10800.Oxygen-free,low phosphorusAC12000DLPPhosphorized,low residual phosphorusC12200DHPPhosphorized,high residual phosphorusASee Classification B224.1.4 The following safety hazards caveat pertains to the testmethod portion,Section 17,of this specification.This standarddoes not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.2.Referenced Documents2.1 ASTM Standards:2B153 Test Method for Expansion(Pin Test)of Copper andCopper-Alloy Pipe and TubingB170 Specification for Oxygen-Free Electrolytic CopperRefinery ShapesB193 Test Method for Resistivity of Electrical ConductorMaterialsB224 Classification of CoppersB251 Specification for General Requirements for WroughtSeamless Copper and Copper-Alloy TubeB577 Test Methods for Detection of Cuprous Oxide(Hydro-gen Embrittlement Susceptibility)in CopperB601 Classification for Temper Designations for Copper andCopper AlloysWrought and CastB846 Terminology for Copper and Copper AlloysE2 Methods of Preparation of Micrographs of Metals andAlloys(Including Recommended Practice for Photogra-phy As Applied to Metallography);Replaced by E 883(Withdrawn 1983)3E3 Guide for Preparation of Metallographic SpecimensE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE53 Test Method for Determination of Copper in UnalloyedCopper by GravimetryE62 Test Methods for Chemical Analysis of Copper andCopperAlloys(Photometric Methods)(Withdrawn 2010)3E112 Test Methods for Determining Average Grain SizeE243 Practice for Electromagnetic(Eddy-Current)Examina-tion of Copper and Copper-Alloy TubesE255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical CompositionE2575 Test Method for Determination of Oxygen in Copperand Copper Alloys3.General Requirements3.1 The following sections of Specification B251 constitutea part of this specification:3.1.1 Sampling,3.1.2 Number of tests and retests,3.1.3 Dimensions and permissible variations,3.1.4 Test specimens,and3.1.5 Significance of numerical limits.1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipeand Tube.Current edition approved April 1,2012.Published May 2012.Originallyapproved in 1985.Last previous edition approved in 2006 as B743 06.DOI:10.1520/B0743-12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2 In addition,when a section with a title identical to thosereferenced in 3.1 appears in this specification,it containsadditional information which supplements those appearing inSpecification B251.In case of conflict,this specification shallprevail.4.Terminology4.1 DefinitionsFor the definitions of terms related tocopper and copper alloys,refer to Terminology B846.4.2 Definitions of Terms Specific to This Standard:4.2.1 level or traverse wound,adjcoil in which the turnsare wound into layers parallel to the axis of the coil such thatsuccessive turns in a given layer are next to one another(sometimes called“helical coil”).4.2.2 single layer flat,adjcoil in which the product isspirally wound into a single di